200% is pretty great... if that's true then I'd be happy to put a link on our pool to your site... heh...
I'll have someone run some tests. PPLNS has that 'chance' that it may pay better... however it's a gamble. We chose not to support that payment model because it's very technically simple to hide blocks... and that's just not acceptable for us... anyway...
I think our users enjoy the consistency and predictability of our payouts...
You forgot to test against kano.is

Due to luck we've paid out 200% for anyone mining since the start (~1.5 months)
More than 200% for anyone who started just before the long 10 block run of under 100% at the moment

Transparent? See the entire source code for the pool on bitbucket

Do we hide where the extra BTC came from?
No.
It is simply luck so far and yes that will eventually change.
We don't say we are paying an extra X% out of magic - it's simply been pool luck so far.
P.S. I wrote the driver for the X3
